x402-gated premium API access on Base, paid per-call in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 payment wall. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all payable per-request via the x402 protocol on the Base network using USDC.
The specific endpoint `/api/v1/stripe/subscriptions/173` is listed as "Premium API Access" and requires a payment of up to 20,000 base units of USDC (0.02 USD) per request. The x402 challenge confirms it accepts POST requests, settles on the Base network to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`, and uses the "exact" payment scheme with a 300-second timeout. No API keys or rate limits are advertised; access is granted purely through per-call micropayments.
However, the actual functionality behind this specific endpoint is unclear. The path suggests a Stripe subscription resource, but the platform's own documentation pages (docs, pricing, README) returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what data or service this endpoint returns. The platform landing page lists many other endpoints at $0.02 each but does not specifically describe this subscription endpoint's behavior. Treat this listing as a stub until more documentation becomes available.
Capabilities
Use cases
- —Accessing premium API functionality with per-request USDC micropayments on Base
- —Agent-driven workflows that need keyless, pay-as-you-go API access
- —Programmatic access to a subscription-related resource without traditional API key management
Fit
Best for
- —Developers or agents already holding USDC on Base who want frictionless API access
- —Use cases requiring no-signup, no-rate-limit API consumption
- —x402-compatible agent toolchains
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —Anyone without a Base-compatible USDC wallet
- —Production systems requiring well-documented request/response contracts
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/173 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, confirming pricing and network details. However, there is no documentation, no OpenAPI schema, no request/response examples, and the actual functionality of this specific endpoint is undocumented. The docs, pricing, and README pages all returned only 'Connect wallet' with no content. This is effectively a stub listing.
Warnings
- —No documentation available — docs, pricing, and README pages all return only a 'Connect wallet' prompt with no content.
- —The actual functionality of /api/v1/stripe/subscriptions/173 is unknown; the path suggests a Stripe subscription resource but no details are provided.
- —No OpenAPI schema or request/response examples are available.
- —No input schema documented — unclear what POST body is expected.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/173
- —The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/stripe/subscriptions/173
- —Documentation pages (docs, pricing, README) returned only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs